node_iterator1.cpp

来自「C++的一个好库。。。现在很流行」· C++ 代码 · 共 35 行

// Copyright David Abrahams 2004. Use, modification and distribution is
// subject to the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#include "node_iterator1.hpp"
#include <string>
#include <memory>
#include <iostream>
#include <algorithm>
#include <functional>

int main()
{
    std::auto_ptr<node<int> > nodes(new node<int>(42));
    nodes->append(new node<std::string>(" is greater than "));
    nodes->append(new node<int>(13));

    std::copy(
        node_iterator(nodes.get()), node_iterator()
      , std::ostream_iterator<node_base>(std::cout, " ")
    );
    std::cout << std::endl;
    
    std::for_each(
        node_iterator(nodes.get()), node_iterator()
      , std::mem_fun_ref(&node_base::double_me)
    );

    std::copy(
        node_iterator(nodes.get()), node_iterator()
      , std::ostream_iterator<node_base>(std::cout, "/")
    );
    std::cout << std::endl;
}